We have setup only office server at our development environment and we are facing some below issue. Could you please help us to resolve this issueWe are getting web socket handshake error. Please help us in resolving this issue.

Hello gauravnewgen!Please specify what instruction you followed to install Onlyoffice. Also check your urls in Document Service Location (Settings->Integration->Document Service)If you installed the latest Onlyoffice version it should look like this